DNA Marker Index information for Chromosome: Y Marker: BY18981.1Names and Aliases for this DNA Marker: BY18981.1, BY18981.Chromosome Position in hg38 Human Genome assembly1: 20031005.Chromosome Position in hg19 assembly2: 22192891 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.